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The purpose of this book is to describe hearing problems which are caused by various kinds of brain diseases in the central auditory pathway. It explains what happens in patients when the bilateral auditory nerve and auditory cortex are damaged.

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Brain imaging and neurophysiological methods have been rapidly developed. The purpose of this book is to describe hearing problems which are caused by various kinds of brain diseases in central auditory pathway. Each topic is explained to use a lot of figures such as brain imaging and neurophysiological data comparing with neuropsychological tests. Readers will understand what happens in patients, when bilateral auditory nerve and auditory cortex are damaged in patients. Some patients can hear but cannot discriminate meanings of speech, music and environmental sounds. The author tries to explain why such a difference occurs.

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1. Introduction.- 2. Origins of Evoked Potentials.- 3. Development and Brain Stem Responses (ABRs).- 4. Auditory Nerve Lesions.- 5. Brain Stem and Midbrain Lesions.- 6. Unilateral Auditory Radiation and/or Auditory Cortex Lesions and Perception.- 7. Bilateral Auditory Cortex and/or Auditory Radiation Lesion and Perception.- 8. Auditory Agnosia in Children.- 9. Auditory Cortex Lesion and Sound Lateraliaztion: Interaural Time Difference Versus the Interaural Intensity Difference.- 10. Corpus Callosum Lesions.

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